You actually did a great job for the most part, especially with the later portions. I admittedly do notice that you seem to have some issues with line confidence.

The arrows are where I think you have the most issues. I notice that some of your arrows don't get smaller as they get further away, and the gaps between folds don't get smaller either. This isn't the case with all the arrows you made, but it is a case with a number of them.

The main issue I see in your organic forms is the degrees of your ellipses. On that first page, there is very little variation in the degrees of the ellipses as you go from one side of each form to the other. You do take steps toward improving this with the contour curves, however, which is good.

Your texture work is very solid. I don't see any instances of scribbling, stippling, or anything of that sort; every stroke appears to be deliberate, which is good. My only possible point for criticism would be that I notice you only break silhouette a bit in the organic forms dissections pages. In a number of cases, the silhouette isn't really broken at all. It seems this may be partially a result of the textures you picked. In any case, you do still break silhouette in a number of cases where you can, and the textures properly adhere to the surface, so I don't have a lot to critique here.

Your intersecting forms and organic intersections are all very good. None of the shapes feel like they don't belong in the same space as the others. Your actual intersections are handled well, too. My only critique is that you didn't apply a drop shadow for organic intersections, but this isn't really a major issue; it's just a nice thing to do.